Wrench.



No. 709,7". f `Patented sept. 23, |902.

n. .ml-ms.

W R E N C H (Application med June 27, 19q2.= CH u M o d e I.)

IINrrn Stearns Parent @indent RALPH JOHNS, OF AIiLGI-IENY, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 709,711, dated September 23, 1902.

Application tiled June 27, 1902. Serial No. 113,525. (No model.)

To rolf/f uffi/0711, Htfty/ concer-lt:

Be it known that I, RALPH JOHNS, a citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Quick-Acting llIonkey-lVrenches, of which the following is a specification, reference being had therein to the accompanying` drawings.

This invention relates to certain new and useful improvements in sliding-jaw wrenches, and relates more particularly to that class that maybe quickly adjusted to grasp the object that is to be turned by the wrench.

The invention further aims to provide a device of the above-described character that will be extremely simple in construction, strong, durable, comparatively inexpensive to manufacture, and highly efficient in its use.

Vith the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claim.

In describingthe invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views, in

which- Figure 1 is a side elevation of my improved wrench. Fig. 2 is a similar view showing the sliding jaw in vertical section. Fig. 3 is a longitudinal sectional view taken on the line 3 3 of Fig. 2. Fig. 4 is a vertical sectional View taken on the line 4 t of Fig. 2. Fig. 5 is a front View of the sliding` jaw. Fig. 6 is a perspective view of the springpressed block.

In the drawings the reference-numeral 1 represents the stationary jaw, which is car ried by the toothed rack-bar 2, at the lower end of which is secured the handle Upon said toothed rack-bar is slidably secured the sliding jaw Lt, having the lower extension 5,

block is provided on its inner face with teeth 10, which are adapted to mesh with the teeth of the toothed rack-bar 2, and upon the front face of the block 7 is formed a recess 11, which forms a seat for the spiral spring 12, the outer end of the spiral spring abutting against the inner face of the securing-plate 14, which is attached to the extension 5 by means of screws 15. Then it is desired to operate the sliding jaw to adjust the wrench to grasp the object that is to be turned, the spring-pressed block may be easily engaged in the recesses 9 and drawn outwardly, thereby compressing the spiral spring 12 and disengaging the teeth 10 from the teeth of the toothed rack-bar, thus allowing the sliding jaw a free and easy movement upon the rackbar until the jaw has been properly adjusted to the desired position, when the springpressed block is released and by the extension of the spiral spring 12 the teeth of the block are forced into locking engagement with the teeth carried by the rack-bar, thus placing the wrench in a position for operation.

The many advantages obtained by the use of my improved device will be readily apparent from the foregoing description, taken in connection with the accompanying drawings.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure byLetters Patent, is-

In a wrench, the combination with a iixed jaw, a rack-.bar rigidly secured thereto, a movable jaw, an extension formed to said movable jaw having approximately U-shaped guideways, a block having a seat formed therein, extensions carried by said block operating in said guideways, a plate detachably secured to the said movable jaw inclosing the outer ends of said guideways, and a spring arranged in said seat bearing against the inner face of said plate, all parts being arranged and operating substantially as described and for the purpose set forth.

In testimony whereof I aiiix my signature `in the presence of two witnesses.

RALPH JOHNS. Witnesses:

' JOHN NoLAND, E. E. POTTER.

IOC 

